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0.5g of zinc is added to 3.5 L of 0.005M hydrochloric acid.
1) What is the pH and pOH of the acid solution?
2) Assuming 100% yield, calculate the final concentrations of reactants and products.
3) Calculate the pH of the final solution
Show that the proton condition for a NH4Cl solution is a linear combination of the mass balance equations and the charge balance equation.
This method assumes that no argon was trapped in the rock when it was formed frothe molten material. A meteorite was found to have equal amounts of 40K and 40Ar. a) Of the potassium-40 that was originally present, what fraction has decayed? b) how..
The tricky part of this multi step synthesis is the isolation of the neutral p-aminobenzoic acid in the second step. Why is isolation so difficult
Calculate the binding energy E B of the helium nucleus 4 /2 He .Express your answer in millions of electron volts to four significant figures.
Compute the number average molecular weight for a polypropylene for which the degree of polymerization is 15,000.
a solution containing pt4 is electrolyzed with a current of 3.50 a. how long will it take to plate out 80. of the
Calculate the work done in joules by the reaction when 0.35 g of Na reacts with water to form hydrogen gas at 5°C and 2.5 atm. 2 Na(s) + 2 H2O(l) 2 NaOH(aq) + H2(g)
What is the limiting reactant? b) How many grams of magnesium hydroxide can be theoretically obtained? c) If only 2.009g of magnesium hydroxide are obtained, what is the percent yield of the reaction?
Chromic acid is a diprotic acid H2CrO4 with Ka1 = 0.18 and Ka2 = 3.2 x 10-7. A solution of potassium chromate is prepared at pH 5.43. Calculate the fraction of the total chromate in this solution that is present as the chromate ion CrO42-.
How many grams of potassium permanganate are needed to decolorize 1g of 2-pentane in basic solution?
An electron in the n=5 level of a hydrogen atom emits a photon wavelength 1282.17 nm. To what energy level does the electron move?
when ammonia is burned in oxygen, free nitrogen gas and water are produced. What volume of ammonia will react completely with 25.0 L of oxygen? what volume of nitrogen gas is formed.
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